wsadmin tool performance tips

Follow these tips to get the best performance from the wsadmin tool.

The following performance tips are for the wsadmin tool:

• When you launch a script using the wsadmin tool, a new process is created with a new Java virtual machine (JVM) API. If you use scripting with multiple wsadmin -c commands from a batch file or a shell script, these commands run slower than if you use a single wsadmin -f command. The -f option runs faster because only one process and JVM API are created for installation and the Java classes for the installation load only once.

  The following example, illustrates running multiple application installation commands from a batch file.

  

  Note: On a Unix operating system, if you invoke a command that includes a dollar sign character ($) using the wsadmin -c option, the command line attempts to substitute a variable. To avoid this problem, escape the dollar sign character with a backslash character (\). For example: wsadmin -c \$AdminApp install ....
  Using Jacl:

  wsadmin -c "$AdminApp install c:/myApps/App1.ear {-appname appl1}"
  wsadmin -c "$AdminApp install c:/myApps/App2.ear {-appname appl2}"
  wsadmin -c "$AdminApp install c:/myApps/App3.ear {-appname appl3}"

  Using Jython:

  wsadmin -lang jython -c "AdminApp.install('c:/myApps/App1.ear', '[-appname appl1]')"
  wsadmin -lang jython -c "AdminApp.install('c:/myApps/App2.ear', '[-appname appl2]')"
  wsadmin -lang jython -c "AdminApp.install('c:/myApps/App3.ear', '[-appname appl3]')"

  Or, for example, using Jacl, you can create the appinst.jacl file that contains the commands:

  

  $AdminApp install c:/myApps/App1.ear {-appname appl1}
  $AdminApp install c:/myApps/App2.ear {-appname appl2}
  $AdminApp install c:/myApps/App3.ear {-appname appl3}

  Invoke this file using the following command: wsadmin -f appinst.jacl

  Or using Jython, you can create the appinst.py file, that contains the commands:

  

  AdminApp.install('c:/myApps/App1.ear', '[-appname appl1]')
  AdminApp.install('c:/myApps/App2.ear', '[-appname appl2]')
  AdminApp.install('c:/myApps/App3.ear', '[-appname appl3]')

  Then invoke this file using the following command: wsadmin -lang jython -f appinst.py.

• Use the AdminControl queryNames and completeObjectName commands carefully with a large installation. For example, if only a few beans exist on a single machine, the $AdminControl queryNames * command performs well.
• The WebSphere® Application Server is a distributed system, and scripts perform better if you minimize remote requests. If some action or interrogation is required on several items, for example, servers, it is more efficient to obtain the list of items once and iterate locally. This procedure applies to the actions that the AdminControl object performs on running MBeans, and actions that the AdminConfig object performs on configuration objects.